| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could be [prep] | 381 |
|
| 2 | [pron] could be [noun] | 308 |
|
| 3 | could be [noun] [prep] | 145 |
|
| 4 | [pron] be [noun] [prep] | 58 |
|
| 5 | [pron] could [noun] [prep] | 52 |
|
